Salt damage is one of the serious causes of deterioration in reinforce d concrete. However, when building mass concrete under salt damage environment, we have to use cement with a heat suppression effect which has low resistance for chloride ion. In this research, we focused on the CA2 which is admixture for salt damage prevention.CA2 reacts with calcium hydroxide from cement hydration and makes hydrocalumite. Thus, the soluble chloride ion is reduced. Finally, concrete using CA2 has high resistance for salt damage. LPC concrete using CA2 has low resistance for chloride ion than OPC concrete using CA2. After that, we had XRD measurement, and we have confirmed that hydration product is different in LPC and OPC when adding CA2 and expansive admixture. We think that the difference of hydration product is reason for difference of salt damage prevention by difference of ability to immobilize chloride ion.
|ホスト出版物のタイトル||Life-Cycle of Engineering Systems: Emphasis on Sustainable Civil Infrastructure - 5th International Symposium on Life-Cycle Engineering, IALCCE 2016|
|出版ステータス||Published - 2017|
|イベント||5th International Symposium on Life-Cycle Engineering, IALCCE 2016 - Delft, Netherlands|
継続期間: 2016 10月 16 → 2016 10月 20
|Other||5th International Symposium on Life-Cycle Engineering, IALCCE 2016|
|Period||16/10/16 → 16/10/20|
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